Can opener



FIG. 1 is an upper left front perspective view of a can opener, showing our new design;

FIG. 2 is a lower right rear perspective view thereof;

FIG. 3 is an upper left rear perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof. 

CLAIM The ornamental design for a can opener, as shown and described. 